Y=1 1/4(1.25)x +9, add 8x to each side and then divide each side by 6
80% of 20 is 80/100 x 20 = 16
So, kelly has used 16 stamps, and has 4 left
Your answer is x = 78! Hope this helps!
Answer:
Silver
Step-by-step explanation:
Find the volume of the coin
<u>Volume of a cylinder</u>

Given:
Substituting given values into the formula to find the volume:


Find the density of the coin given it has a measured mass of 18.54 g
<u>Density formula</u>

where:
= density- m = mass
- V = volume
Given:
- m = 18.54 g

Substituting given values into the density formula:


Given:
Therefore, as
the coin is made from silver.